In addition to conventional PVC resin, there is also a type of chlorinated CPVC resin, which is a new type of engineering plastic. The molecular bond irregularity and polarity of CPVC resin increase, resulting in improved solubility, chemical stability, and heat resistance. The thermal deformation temperature, Vicat softening temperature, and maximum operating temperature of CPVC resin are higher than those of conventional PVC resin, so it has a wider application prospect.

However, the impact strength of PVC resin is relatively low, and to improve this performance, impact modifiers are usually added. The elastic particles of impact modifiers can reduce the total stress caused by silver lines, and utilize the deformation and shear bands of the particles themselves to prevent the expansion and growth of silver lines, absorb the impact energy introduced into the material body, and thus achieve the goal of impact resistance.